The Geronimo Stilton The 10 Book Collection (Series 2) Box Set is a paperback series of books written by Geronimo Stilton, aimed at children ages 5-7. Published in 2018, the books are in English and cover topics related to boxing. The box set includes 10 books in the series, providing a complete collection for young readers to enjoy the adventurous stories of Geronimo Stilton.